Combining deep reinforcement learning with alpha-beta pruning
Yes it's possible to to combine AlphaZero with Minimax methods (including alpha-beta pruning). AlphaZero itself is combination of  Monte Carlo Tree Search (MCTS) and Deep Network, where MCTS is used to get data to train network and network used for tree leafs evaluation (instead of rollout as in classical MCTS). It's possible to combine selection-expansion part of AlphaZero MCTS with Minimax the same way as it was done for classical MCTS - "Monte-Carlo Tree Search and Minimax Hybrids", pdf.